The Applause singer admitted she spent three million US dollars on the extravagant gigs, which left her broke, in the upcoming EPIX documentary Who The F*** Is Arthur Fogel?, reported Entertainment Tonight.

"I had three million dollars in the bank to my name and I threw it all in to make my stage. So I was bankrupt during the show," she said.

The 27-year-old, who played over 200 shows during the two-year-long world tour from 2009 to 2011, hoped that Arthur Fogel, the chairman of Live Nation's global touring division, would help turn her fortunes around.

She continued: "I remember I went home and I was with my dad and he said, 'I don't understand. Bad Romance is out. You are all over the radio. Everyone is talking about you and you don't have a pot to p*** in'. I said, 'Just let me do this'. Let me just put it on the stage... "

She added: "I remember he (Arthur) called me and he said, 'We want to do this.' And he got Live Nation to write me a 40 million US dollars cheque. And it changed my life and the life of my whole family."

"I don't know what the f***-all I have to do with Katy Perry. Our music is so completely different," she said at SXSW, reported Billboard.

"I couldn't be more different, really. I really don't fit in pop music in a way, but I came through it and I'd like to think I changed it in some way so you can feel like you don't have to fit into a mould."